C# Close Form1 Open Form2 Error

Question

This question will definitely seem redundant but I've tried seemingly everything!

Ok I have form1 and form 2. I want to open form2 from buttonclick on form1 and have form1 close.

I've tried the:

Form2 newform = new Form2();
this.Close();
newform.Show();

I've tried moving the second line in all possible places inside the buttonclick function. But my problem is that if I use the "this.Close();" command it closes both forms, if I use the "this.Hide();" command it leaves the process open and I have to manually close it to debug again.

The(this.Close();" works on any other form (ex. form2 close => open form3 ETC)

Does anyone know any other way to have it close it but not close the entire application?

DhavalR DhavalR · Accepted Answer · 2013-12-28T05:57:24

I tried to use ApplicationContext in Program.cs.

Take a look at the below code. Form1 and Form2 both contain a Button.

static class Program
{
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main ()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        MyApplicationContext context = new MyApplicationContext();
        Application.Run(context);
    }

    public class MyApplicationContext : ApplicationContext
    {
        private Form1 form1 = new Form1();

        public MyApplicationContext ()
        {
            form1 = new Form1();
            form1.Show();
        }
    }
}

Below is the code for Form1

    private void frm1Button1_Click (object sender, EventArgs e)
    {
        Form2 frm2 = new Form2();
        frm2.Show();
        this.Close();
    }

And here is for Form2.

    private void frm2Button1_Click (object sender, EventArgs e)
    {
        Form1 frm1 = new Form1();
        frm1.Show();
        this.Close();
    }

C# Close Form1 Open Form2 Error

2 Answers